Knotter.



B. E. BYRD.

KNOTTER.

APPLIOATION FILED Nov.19, 1908..

v 934 1J38@a Patented Sept. 14, 1909.

Z SHEETS-SHEET 1.

B. E. BYRD.

KNOTTER.

vAPPLICATION FILED Nov. 19, 1908.

' 934,889. Patented sept. 14,1909.

2 SHEETS--SEEET 2.

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' BRITTN E. BYRD, GF DURHAM, NORTH CRULIN, ASSIGNOR T0 BYRD MFG. C0.,Oft? DURHAM, NORTH CAEQQNA.

KNDTTER.

Specification of Lettera latent.

Application filed November 19;, tm. Serial No. 463,459.-

I To all whom it may concern.-

Be it known that I, BRITTON Bran, a

ham, in the county of Durham and State of North Carolina, have inventeda new and useful lnotter, ot' `which the following is a specification.

This invention relates to hand operated knotters and has for itsprincipal object to provide a novel construction oi knetter in whichpractically all the parts are formed of stamped sheet metal, andtherefore may be produced at a minimum expense.

A further object of the invention is to provide a construction of knoterin which .the operating mechanism is so arranged as to follow a naturalmovement of the thumb sov 'that the knetter may be operated Withoutvfatigue.

A 'further object of the'invention is to improve and simplify thegeneral construction of the trame and the thread clamping mechanism. l

Further objects and advantages will appear in the following description,itbeing' understood that various changes in form, proportions and minordetails of construction may be resorted to within'thescope of theappended claims.

ln the accompanying drawings forming a part of this siriecilieationFigure l is a side elevation of a knetter constructed vin accordaneewith the present invention. Fig. 2 is a similar vien' looking at theopposite side ot the knetter., the parts heine in normal position and inreadiness to i. -eive a thread to bev knotted. Fig. 3 is a view similarto Fig. 1, showing the parts in the positions assumed ,at the completionott the knot tying operation. Fig. 4 is a vertical plan view with thelower portion of the frame in section. V

Fig. o 1s a detail perspective view oi the upper main frame detached.Fig. 6 is a detail perspective view or the thumb actuated lever, showingthe manner ofi mounting the thread clamping lever in position thereon.

Similar nun'ierals of reference indicate corresponding` parts in all thefigures of the drawings.

The main .traine .illustrated in Fig. 5 is formed of a sing sheet ofmetal which may" be die stamped and bent to form a top 1t), a pair, ofparallel side Walls 11 and 12 and a pair of trent and rear Walls and la?t' e whole being in the form of an approximately rectangular box open atthe bottom.

.Thefront Wall 13 is provided with an opening for the reception of theforward end ofa tying-bill shaft 15 Which-carries at the front end atying-bill 16 ot' the type usually eniployedvin machines of this classand near the front end of the shaft is a fixed collar 1T which holds theshaft from forward endWise movement. i

The rear end of the shaft has a slight' recess for the reception of thepointed end of a bearing pin 18 that is mounted in a .threaded openingformed in the rear wallv lll of the main casing and locked in place by anut 19.

The side Wall v12 of the casing is extended longitudinally beyond thefront Wall 13 and thence bent laterally and upwardly to produce a billE20 which forms a guide for the thread or yarn during the tyingoperation. y The clamping'- or cutting member of the tying-bill isactuated as is usual by a ring :'23 that is mounted eccentrically withrespect to the tying bill shaft, and this-ring has a base flange 2stwhich, in the present instance is conined in place by one or moreclamping screws 25. l

The handle is .preferably stamped or otherwise formed from` a singleplate of sheet metal bent to conform to the soaps of the hand and havingits opposite ends ro-` vided witlropenings for the reception o anattaching ap 3l.

Formed integral with and extending latorally from the handle 30 is anupwardly curved arm 32 which is connected to the side wall 11 of themain vtrame by a screw or similar 'fastening device 33.

` Extending between the arm 32 and the rear end of the main frame is anarcuate arm 3:23", one end of which is fastened to the arm 32 by a screw34', While the opposite end thereof is provided With a segmental slot 35for the reception of a relatively small screw 3G. Thus 1t will be seenthat by loosen ing the screw7 36 the main supporting frame may beadjusted at lan angle or inclination with respect to the handle andsecurely locked in adjusted position, said main frame swinging on thescrew 38 as a pivot.

Pivotally mounted at 37 on the main' trame lis an actuating lever 39Which forms a closure for the open end of the roain` frame Patentedsept. i4, 1909;

and has one end thereof bent downwardly to produce a thumb-piece 40,there being flanges 41 and42 extending vertically from'the oppositelongitudinal edges of the actuating member and provided withtransversely alined openings 43 for the reception of the pivot pin 37,as shown.

To the lower side of' the forward end of the lever 39 is secured a smallclampingplate 44 which serves to hold the lower end of a flexibleactuating member preferably in the form of a cord 45 that is woundaround the shaft 15 andis secured at its end to a collar 46 on saidshaft.

When the/ lever is pulled down from the position shown in Fig. 1 thecord will be lclamping lever .48 having its upper longitudinal edgedisposed in a straight line and its forward portion terminating in anoverhanging finger 49.

rlhe rear end of the lever 48 terminates in a main clamping arm 50, tothe extreme.

end of whichv is pivoteld a clamping member 51 that straddlesthe'clamping member 50 and is provided with4 a clamping hook 52 extendingover theclampin/g edge of the arm i 50 in such a manner as tofirmly bitethe thread.

The clamping member 51 entends rearwardly and is held at all times incontact with a pin or screw 58 that projects from the side plate 11.Thisclamping member 51 is engaged by. one end of a'spring 5 the`opposite end of which is coiled'around the'screw 33 a number of timesand .thence is bent upward lunder the arm 32 of the handle as indicated.at 55. lThe tendency of the spring is to maintain thetwo clamping. armsin the position.V shown in Fig. 1

of the drawings and to assist'in restoring.

the clamping arms 'or members to this position, after each operation.`The screw 83 also forms a pivotal support for a small substantiallysegmental plate 56 having an inclined' or cam face 57,1which engages apin or anti-friction roller 58 extending laterally from.v the flange 42ofthe actuating lever 39, so -that when the lever 89 is pulled down theroller 58 will ride on-Y the cam face 57 and movement will betransmitted to the thread clamping member.

. One lof the arms 59 of the plate 56 is provided with a threadedopening for the reception `of a screw 60,' which latter also passes.through an arcuate slot 61 formed in the lever. 48, the slot beingcurved on an arc structure from the axis of the screwl so' that bymanipulating the screw 60 the anguvlar disposition of 'the 4lever 48 maybe changed at will. This adjustable connection between the plate 5G andlever 48 also permits adjustment of said members'so that the operationof the thread clamping members .may be timed with the utmost accuracy.'

In order to permit the passage of the roll-er i' 58 an arcuate slot 62is formed l-in the wall 11 of' the main frame, as best shown in Fig. 5of the drawings.

The operation of the tying bill proper is familiar to all personsskilled in this art,

particular descrip;

As the thumb lever 4`Ois pulled down the roller 58 will ride on the camface 57 and movement will therefrom be transmitted to the thready.clamping lever 48 causingthe latter to move from the position shown inFig. 1 of the drawings to that illustrated in Fig. 8 so that the threads,willbe gradually clampedbetween the members 50 and 52, the clampingaction on the thread increasing as the operation progresses, andtowardthe latter art of the movement the knotted thread 1s pulled from thetying bill. .lt will be noted that the main frame' is disposed at anobtuse angleto the general plane of the handle member 30 so that whenthe device is held in the hand in the'usual manner the thread guide,thread-"clamp, and tying bill will be brought into more-convenient:position` for operation. At the .same time' the actuating lever isarranged toswing downf ward'so that the operator may :move the thumbdown toward thepalm of the hand,

the operation being much easier to accomplish than where, la'sr'in mostmachines of this class 4the movement'of the thumb is in the ldirectionof the fore-finger and therefore brings into play muscles which"ordinarily are not exercised..4 It will also be noted that theover-hanging arm or finger 49 of the lever 48 by engagement with thescrew 36 serves to-limit the tilting movement of saidlever.

'By having the main frame and its associated parts olf-set with respectto the handle 30, the thumb-piece 40 is always in position to beengaged. by the thumb of the operator without the necessity of bendingthe thumb' at the first joint thereof.

4f-laving thus described the invention 'what is claimed iszv i 1. In ahand operated knetter, a frame including a handle member, a tying bill,a

tying bill shaft mounted in the frame, a thumb lever pivoted at its rearend to the frame vand arranged to swing downward during thel knot tyingoperation, and a flexible member Wound around the tying shaft andconnected to said thumb lever.

2. In a hand operated knotter, a vframe including a handle member, a;tying bill, a tying bill shaft journaled in the frame, a thumb leverpivoted at its rear end to the lower portion of the frame and arrangedto swing downward-during the knot tying operation, a flexible memberWound around the shaft and connected to said thumb lever, a threadclamping member,fand means for transmitting movement from the thumb leyver to said thread clamping member.

3. In a hand operated knot tying machine, a main frame, and a handleframe disposed at an obtuse angle to each other, a tying bill, a tyingbill carrying shaft journaled in the main frame, a thumb lever pivotedin the main frame and arranged to swing downwardly and toward the handlemember during the knot tying operation, and a flexible member Woundaround the shaft and connected to said thumb lever.

4. In a hand operated knot tying machine, a main frame, a handle frameoft' set With respect to the main frame and disposed at an obtuse angleto the latter, a tying bill, a tying bill carrying shaft journaled inthe main frame, a thumb lever pivoted in the main frame and arranged tosWingdoWnvvardly during the tying operation, and a flexible member Woundaround the shaft and connected to said thumb lever.

5. In a hand operated knot tying machine, a substantially rectangularmain frame, a handle frame having an integral curved arm rigidlysecuredto the main frame, a thumb lever pivoted at its rear end to the rearportion of the main frame and arranged to lit -betiveen the latter Whenin closed position, a tying bill, a carrying bill shaft j ournaled inthe main frame, a tlexible member'vvound on the shaft and connected withthe thumb lever, a thread clamping member, and means for connecting theterminal clamping member tothe thumb lever.

G. In a hand operated knot tying machine, a main frame, a thumb leverpivoted thereto, a tying bill actuated from the thumb lever, a threadclamping lever having a cam face, a projection extending from the thumblever and engaging said cam face, and a secondary clamping memberpivotally connected to and carried by said clamping lever.

In a hand operated knot tying machine, a main frame, a thumb leverpivoted thereto, a tying bill, means for actuating the tying bill fromthe thumb levers, a thread clamping lever, a plate adjustably securedthereto l ing said cam tace, a romplcnlentary clampj ing member carriedat the tree end of the lever, and means for limiting the swinging lmovement of said complementary clamping l member.

8. In a hand operated knot tying machine, a main frame, a tying bill, athumb lever for operating said tying bill, a main thread clamping lever,a plate pivotally connected With the clamping lever and provided With acam face, adjustable means between the plate and lever, a projectionextending from the thumb lever and engaging the cam face, acomplementary member, and. means serving to restore the clamping memberand lever to initial position. y i

9. In a hand operated knot tying machine, a main frame, a handle olilset with respect to the main frame, a connection between the handle andmain frame for permitting adjustment of the latter with respect to saidmain frame, a thumb lever carried by the main frame, a tying billactuated from the thumb lever, a thread clamping lever having a camface, a projection extending trom the thumb lever and engaging said camface, and a secondary clamping member pivotally connected to and carriedby said clamping lever. f

l0. In a hand operated knot tying machine, a main frame, a handle havingan arm extending laterally from one longitudinal edge thereof andpivotally connected with the frame, a slotted arm forming a connectionbetween the arm of the handle lever and the main frame to permit tiltingmovement of said main frame, a tying bill, a tying bill shaft mounted inthe frame, a thumb lever pivoted at its rear end to the frame andarranged to swing downwardly during the knot tying operation, and aflexible member Wound around the tying shaft and connected to said thumblever.

chine, a main frame, a thread clamping lever pivotally mounted on themain frame and having one end thereof extended longitudinally to form astop nger, a thumb lever, a tying bill actuated from the thumb lever, aplate having a cam face, and a projection extending laterally from thethumb lever and engaging the cam face for actuating the thread clampingmember. l

12. In a hand operated knot tying machine, a main frame having aslotformed in one side thereof, a handle member off set With respect' to themain frame and secured to the latter, a connection between the handleand main frame to permit the angular adjustment ofl said main frame, athread clamping lever, va thumb lever pivotally mounted on the mainframe, a tying bill actuated 'rom the thumb lever, a plate having a camface, a projection extending laterally from the thumb lever andoperating 11. In a hand operated knot tying ma-` Within the slot vin themein frame for engage! In testimony that I claim the foregoing lmentwith the cam face of the .'plate, there es my own, I have heretofxilxelmyl signabeng a segmental-slot formed .in the thread ture n thepresence of .two Witnesses. Aclamping lever, and a screw extendingBRITTON E. BYRD. 5" through said. slot and engaging the plate Witnesses:

for adjustin' the thread'clamping leverrelaf` 1S. PERRY, 'tively to saiplate. W. H. MCCABE, Jr.

